http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 유현석 (검색결과 368 건)
- 무료
- 기관 내 무료
- 유료
-
-
유현석,김영석,권순욱 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.3
The technology to automatically detect the surrounding working environment for modeling of the result is the key essentialtechnique for the automation of the construction equipment developments. When noise takes place during 3D modeling of the frontwork area of the automated construction equipments, the point of noise occurrence during the surface modeling can result in groundlevel phenomenon in the form of triangular pyramid to lower the quality of the modeling. This can greatly affect the detection of theobjects around the automated equipment. This study proposed revised object clustering and differential algorithms for noiseelimination of 3D terrain model and compared the noise elimination performance of existing algorithm and proposed algorithm onthe images of actual earthwork working environment. It is expected that the noise elimination algorithm proposed in this study willbe very useful as a widely used essential technology required for the development of automated technology not only in earthworkfield but also in other general construction and civil engineering fields by noise elimination of the 3D working environment model.
-
-
유현석 성균관대학교 국정관리대학원 2006 국정관리연구 Vol.1 No.1
글로벌 거버넌스라는 개념은 국제적 차원에서 생겨나는 새로운 변화, 즉 초국가적 성격을 가진 문제들의 증가 및 새로운 비국가 행위자들의 등장 그리고 지구적 문제해결을 위한 권위와 능력이 지구정치(global politics)의 다양한 행위자에게 분산되는 현상을 담아내기 위한 개념이다. 이러한 새로운 개념의 등장은 기본적으로 세계화라는 변화에 기인하며 국가중심의 국제정치 패러다임에 대한 중대한 변화를 요구하고 있다. 국제정치학의 다양한 이론들이 글로벌 거버넌스라는 새로운 개념에 대한 해석과 수용을 시도하고 있다. 국가중심적인 이론인 현실주의자들이 거버넌스라는 개념의 필요성을 인정하지 않으려는 반면에 국가간 협력과 제도의 중요성을 신자유주의자들은 거버넌스 논의의 단초가 이미 자신들의 이론적 축적물에 존재하고 있다고 주장한다. 거버넌스 논의들이 새로운 이론적 작업들을 자극하기도 한다. 국제NGO나 기업 그리고 초국적 종교운동과 같은 사적 행위자들의 중요성이 강조되면서 국제정치에서 이들의 위상, 역할, 국가와의 관계 등에 대한 연구들이 활발해 지고 있다. 거버넌스를 강대국의 헤게모니적 지배양식이라는 차원에서 이해하려는 시도도 있다. 현재 지구적 문제들 다루는 경제적, 정치적, 군사적 거버넌스의 본질이 강대국들의 헤게모니적 지배양식으로 이해하고 이에 대한 대안적 헤게모니를 만들기 위한 노력들을 강조하고 있는 것이다. 현실의 국제정치가 얼마나 거버넌스적인가에 대해서는 많은 이견이 존재한다. 많은 영역에서 아직까지는 국민국가 중심의 글로벌 통치가 주를 이루고 있으며 글로벌 거버넌스는 걸음마 단계라고 볼 수도 있다. 그러나 주목할 만 한 것은 주권국가의 독점적 영역이었던 안보와 같은 이슈에서도 거버넌스로의 변화들이 나타나고 있는 것이다.
-
Titanium plasma sprayed implant에 관한 여러가지 기계적 표면처리방법이 implant표면조도에 미치는 영향
유현석,박재완,서조영,Yu, Hyeon-Seok,Park, Jae-Wan,Suh, Jo-Young 대한치주과학회 1993 Journal of Periodontal & Implant Science Vol.23 No.3
실패한 임프란트를 구강내에 유지하기 위하여는 임프란트 매식체의 표면을 처치하여 세균독소를 제거하구 주위의 연, 경조직에 적합한 표면 구조를 만들어 주어야 한다. 이에 본 연구에서는 임프란트 매식체 표면을 high speed diamond bur, low speed diamond bur, stone, rubber point, Jetpolisher로 처치하여 가장 평활한 표면을 만들 수 있는 방법을 알아 보았다. 조도측정기를 이용하여 표면의 최대높이값을 측정한 결과 high speed diamond bur, rubber point, Jetpolisher를 사용한 시편의 최대높이값의 평균은 $7.77{\mu}m$였고, low speed diamond bur, rubber point, Jetpolisher를 사용한 경우에는 $8.44{\mu}m$를 보였다. Stone, rubber point, Jetpolisher를 사용한 경우 $6.24{\mu}m$로 가장 평활한 표면을 보였다. 이러한 수치들은 제거하지 않은 TPS(titanium plasma sprayed)면의 $24.43{\mu}m$에 비하여는 낮은 수치를 보였다. 주사전자현미경으로 관찰 하였을 때 high speed diamond bur, rubber point, Jetpolisher를 사용한 군에서는 TPS 입자들이 부분적으로 남아있었으나 이 입자들은 그 높이가 원래의 TPS에 비하여는 상당히 감소되어 있었다. Low speed diamond bur, rubber point, Jetpolisher를 사용한 시편에서는 전 표면에 걸쳐 TPS가 남아있는 거친 표면 구조를 보였다. Stone, rubber point, Jetpolisher를 사용한 시편은 대부분의 TPS가 제거되어 titanium이 노출되어 있었고, titanium 금속에 stone에 의한 흠들이 보였으나 일부분에서는 TPS가 남아있어 제조회사에서 만들어진 평활한 표면에 비해서는 거친 양상을 보였다. For maintenance of an ailing or failed implant it is essential to treat the implant fixture surface so as to remove bacterial endotoxin and make a surface tolerated by surrounding soft and hard tissue. Thus in this study the method that makes the smoothest surface treated with a high speed diamond bur, a low speed diamond bur, a stone, a rubber point or Jetpolisher was studied. With the profilomenter a mean value of $R_{max}$ was measured. The hight speed diamond, the rubber point and the Jetpolisher showed a mean $R_{max}\;7.77{\mu}m$. The low speed diamond bur, the rubber, point and the Jetolisher made a mean value of $R_{max}\;8.44{\mu}m$. The stone, the rubber point and the Jetolisher showed the smoothest surfaces with a mean value of $R_{max}\;6.24{\mu}m$. TPS (titanium plasma sprayed) areas showed a mean vlaue of $R_{max}\;24.42{\mu}m$, and the smooth surfaced titanium disc manufactured by the company (IMZ, Germany) shows a mean value of $R_{max}\;3.00{\mu}m$. Under the SEM examination the disc treated with a high speed diamond bur, a rubber point and a Jetpolisher showed partially remaining TPS particles, but the height of these particles were reduced remarkably compared with those of the original TPS. The disc treated with a low speed diamond bur, a rubber point and a Jetpolisher showed a rough topography with remaining TPS on the entire surface. A stone, a rubber point and a Jetpolisher removed almost TPS and the bulk titanium metal was exposed and some scratches were made by the stone. All treated discs were revealed as rougher than the smooth surface disc manufactured by the company. An untreated TPS disc shows a very irregular surface and a $40{\mu}m$ height of the plasma sprayed areas.
-
-
-
-
유현석 경희대학교 사회과학연구원 2009 社會科學硏究 Vol.35 No.3
This study examines the experience of Canada in mainstreaming human security concept. It was not a smooth and easy journey for Canada accepting the human security concept and applying it to her foreign policy. Since the inception of the concept by foreign policy circle there was an intense debate whether the concept should be the major principle of Canada’s foreign policy. Internationally, human security policy faced lukewarm responses from international community. Canada needed to have sophisticated strategies to mainstream this new concept. The aim of this paper is to show the importance of careful strategies in promoting new concept as a policy guideline and the role of domestic institutions in that task. In terms of strategies, Canada has promoted human security agenda through multilateral framework. Although U.N. has been a favorite multilateral platform Canada often acted outside existing multilateral fora. Norm making and creating international network with like-minded countries were also major strategies of Canada as shown in landmine ban campaign case in promoting human security agenda. Finally, the partnership with NGO is the most striking feature of Canadian human security policy. Domestic institutions have been instrumental to mainstream human security policy. DFAIT has been a major organizational platform for promoting human security. Other government organizations such as CIDA also played important roles. Also, CCHS as research network funded by DFAIT, has contributed to facilitate the exchange of information on human security issue and to help build a human security community in Canada and internationally. This study examines the experience of Canada in mainstreaming human security concept. It was not a smooth and easy journey for Canada accepting the human security concept and applying it to her foreign policy. Since the inception of the concept by foreign policy circle there was an intense debate whether the concept should be the major principle of Canada’s foreign policy. Internationally, human security policy faced lukewarm responses from international community. Canada needed to have sophisticated strategies to mainstream this new concept. The aim of this paper is to show the importance of careful strategies in promoting new concept as a policy guideline and the role of domestic institutions in that task. In terms of strategies, Canada has promoted human security agenda through multilateral framework. Although U.N. has been a favorite multilateral platform Canada often acted outside existing multilateral fora. Norm making and creating international network with like-minded countries were also major strategies of Canada as shown in landmine ban campaign case in promoting human security agenda. Finally, the partnership with NGO is the most striking feature of Canadian human security policy. Domestic institutions have been instrumental to mainstream human security policy. DFAIT has been a major organizational platform for promoting human security. Other government organizations such as CIDA also played important roles. Also, CCHS as research network funded by DFAIT, has contributed to facilitate the exchange of information on human security issue and to help build a human security community in Canada and internationally.
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
